Skip to content

An operating brand of Plainsight Systems LLC

Instruments.
Out of everyone else's hands.

Local-first. On your hardware. Under your rules.

What we build Our philosophy →
The trade

The trade isn't necessary.

The industry built useful technology on a bad trade: capability in exchange for surveillance. Your patterns. Your behavior. Your home. You became the commodity, and the product called it innovation.

Home-automation hubs send your footage upstream. Robot vacuums map your floor plan and phone it home. AI assistants store everything you ever ask. The pattern is the same — capability bought with invasion.

CustodyZero rejects the trade. Capability and custody aren't in conflict; they were paired before someone decided to separate them for someone else's revenue.

What we build

The instruments

Writing instrument
Type

A writing surface. The keyboard is the spine.

Alpha testing
Always-on assistant
Valet

An always-on assistant. Voice-callable. On your machine.

In development
Edge home safety
StationZero

Edge-native home safety. Footage on your storage.

Design and validation
The constraint

Authority belongs to the operator. Not to the vendor.

Every CustodyZero design decision is filtered through this. If a feature serves the company providing the product more than the person using it, it doesn't ship.

Read the philosophy →